Here's the breakdown:
* Teats: These are the external part of the mammary glands, through which the mare's milk is released. They are typically about 1-2 inches long and are located on the ventral (bottom) side of the mare's udder.
* Udder: This is the pouch-like structure that contains the mammary glands. It is usually not visible unless the mare is lactating.
Therefore, while horses do not have nipples, they do have teats that serve the same function for their foals.